Problems with the planned layout

We use two TVs with androidtv and cms. The TVs are added to the group, the task is set for them to play the layout. Layout consists of three images.
Layout starts playing, but one androidtv starts playing later than the other, although it is planned to play for the group. The time is synchronized for the CMS and for TVs. How can you get the TV to start playing the layout at the same time?

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